Anode support



Sept. 6, 1938. w. w.'wATRous, JR

ANODE SUPPORT Filed Deo. 20, 1934 Tr IIIJHIIJVIHHHI INVENTOR W. ,w Mir/maf, JR. BY )77 9* @M ATTORNE Patented Sept. 6, 1938 PATENT OFFICE vANODE.

Ward Watrous, Jr.

SUPPORT Verona, N. J., assigner,

by mesne assignments, to Westinghouse Electric and Manufacturing Company, East Pittsburgh, Pa., a corporation of Pennsylvania,

Application December 20, 1934, Serial No.1758,348y

4 Claims.

My invention relates to electron discharge devices and particularly to the manner in which the electrodes thereof are supported to prevent dis" placement of the same during operation of the device.

In such devices especially those of high power utilized in radio transmission and the like minute displacement of the eltctrodes with respect to each other due to vibration of various natures is not an uncommon occurrence. This inherently results in the generation of microphonic noise, sputtering, actual frequency shift, or a combinatio-n of two or more of these undesirable conditions. Upon the occurrence of such condition the discharge device causes the transmission of the signal to be considerably distorted which is more or less still further amplified at the receiving stationL giving faulty reception.

It is accordingly an object of my present invention to provide a discharge device wherein the electrodes are rigidly supported in spaced relation with respect to each other in such a manner that displacement thereof due to vibration of various nature during operation of the 25 device is substantially eliminated.

Another object of my present invention is the provision of a discharge device wherein the electrodes thereof are maintained in spaced relation with respect to each other and displacement of the same with attendant microphonics or frequency shift during operation of the device is precluded.

Another object of my present invention is the provision of a discharge device having a substantialy cylindrical graphite anode so supported .in spaced relation to the other electrodes of the device that displacement thereof with accompanying microphonics, sputtering, or frequency shift during operation of the device is prevented.

A further object of my present invention is the provision of a discharge device wherein the substantially cylindrical carbon anode surrounds the other electrodes in spaced relation with respect thereto and is supported in at least two planes by support wires sealed into the reentrant stem of the envelope and threadedly engaging the anode in such manner as to prevent minute displacement thereof with the occurrence of microphonics, sputtering, or frequency shift during operation of the device.

Still further objects of my present invention will become obvious to those skilled in the art by reference to the accompanying drawing wherein:

Figure 1 is a plan view of a discharge device (Cl. Z50-27.5)

constructed in accordance with my present invention, 1

Fig. 2 is a side elevational view on an enlargedv double helix configuration or the like disposed interiorly of the envelope and additionally supported at its apex by a further supporting rod or wire I2 sealed into the reentrant stem 6.

A pair of leading-in and supporting conductors I3 and i4 are likewise sealed into the reentrant stem 'I in the usual manner and are arranged to rigidly support a grid electrode I5 which may also be of helical form having its respective convolutions spot Welded or otherwise rigidly secured to the leading-in conductors I3 `and I4, and surrounding the cathode I0. provided with a still further reentrant stem I6 angularly disposed with respect to the other reentrant stems 6 and I and a plurality of leadingin and supporting wires or conductors I1, I8, I9 and 2i! are sealed into this latter stem I6. `The inner ends of these respective leading-in and supporting wires are joined, such as by welding or the like, to sections or portions 22 of increased diameter to increase the rigidity thereof which in turn have their free ends suitably threaded.

A substantially cylindrical graphite anode 23 having laterally extending fianges 24, 25 and 26 disposed in separate planes surrounds the cathode and grid electrodes I and I5, respectively, and is maintained in concentric spaced relation with respect to the latter by the free ends of the reinforced portions 22 of the respective supporting wires I'I, I8, I9 and 20 threadedly engaging the flanges 24, 25 and 26 of the anode. By this construction the anode is supported in two separate and distinct planes, as can be more readily seen from Figs. 2 and 3, one of which extends horizontally through the flanges 25 and 26 to which the leading-in and supporting wires I9 and 20 are connected and the other extending horizontally through the flange 24 having the wires II and I8 connected thereto, thus giving a The envelope is rigidity to the supporting Wires which maintains the anode in spaced relation to the remaining concentric electrodes.

Moreover, the threaded connection of the support Wires to the anode not only still further enhances the rigidity of the support and precludes displacement of this electrode, due to vibrationsl of various nature during operation of ythe device, but in addition reduces the electrical resistance at the points of connection between the leadingin and supporting Wires and the anode. By preventing displacement of the anode relative to the other electrodes of the device the occurrence of microphonics, sputtering, and frequency shift,l

ing operation of the device due to vibration or the like is eliminated.

Although I have shown and described one embodiment of my invention I do not desire to be limited thereto as various other modifications of the same may be made without departing from the spirit and scope of the appended claims.

What is claimed is:

l. An electron discharge device comprising an evacuated envelope having a stern, cooperating felectrodes disposed in said envelope one of which is an anode of substantially cylindrical configuration surrounding the other of said electrodes and having its longitudinal axis disposed substantially transverse to the longitudinal axis of said stem,

iand means to maintain said anode in spaced relation With respect to the other of said electrodes to prevent displacement thereof with attendant microphonicsand frequency shift during operation of said device comprising flanges disposed longitudinally of said anode and support members extending from said stem tangentially secured to said anges on opposite sides of said cylindrical anode, and another support member extending from said stem and secured to one of said flanges intermediate said first mentioned support members.

2. An electron discharge device comprising an evacuated envelope having a stem, a cathode in said envelope, a substantially cylindrical shaped graphite anode disposed in said envelope surrounding said cathode and having its longitudinal axis disposed substantially transverse to the longitudinal axis of said stern, longitudinally extending flanges on the Wall of said anode disposed in a horizontal plane: and in a plane normal thereto, and means to maintain said anode in spaced relation With respect to said cooperating electrode to prevent displacement thereof With accompanying microphonics and frequency shift during operation of said device comprising a plurality of supporting Wires sealed into said stem and tangentially disposed relative to the Wall of said anode and threadedly engaging said flanges.

3. An electrode for electric discharge devices comprising an integral graphite cylinder with outwardly extending flanges disposed on the Wall of said cylindrical anode and extending in the direction of 'the longitudinal axis thereof, said flanges being disposed in a horizontal plane and in a plane normal-thereto and provided with threaded openings therein for receiving tangentially extending support Wires for the purpose of supporting said electrode in order to prevent displacement thereof With accompanying frequency shift and microphonic noises during operation of said device. y

4. An electrode for electrical discharge devices comprising an integral graphite cylinder with outwardly extending flanges disposed on the Wall of said cylindrical anode 180 apart, and a further flange positioned normalto said first mentioned flanges, said anges being provided with threaded openings therein for receiving tangentially extending support Wires for the purpose of rigidly supporting said electrode in order to prevent displacement thereof With accompanying frequency shift and microphonic noises during operation of said device.

WARD W. WATROUS, JR.

ill 

